The (accidental!) space wang is actually not the work of Curiosity, but of its older and obviously naughtier siblings Spirit and Opportunity, which were launched in 2003. Apparently they got bored sometime in the last nine years. Despite being posted on NASA’s website, though, their graffiti went unnoticed until it was turned up by the conglomerate of dick-seeking missiles known as Reddit. Nice work, guys. You may have royally bollixed the whole crime-solving thing, but you found the largest of planetary dongles, and for that we salute you.